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        <h1><a href="../../index.html">All files</a> / <a href="index.html">src/directives</a> drag.ts</h1>
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<span class="cline-any cline-no">&nbsp;</span></td><td class="text"><pre class="prettyprint lang-js">import type { App } from "vue";
&nbsp;
<span class="cstat-no" title="statement not covered" >export const drag = (app: App) =&gt; {</span>
<span class="cstat-no" title="statement not covered" >    app.directive("drag", {</span>
<span class="cstat-no" title="statement not covered" >        mounted(el: HTMLElement, binding: any) {</span>
            // 默认参数
<span class="cstat-no" title="statement not covered" >            const defaultOpts = {</span>
<span class="cstat-no" title="statement not covered" >                dragDirection: 'n, e, s, w, ne, se, sw, nw, all',</span>
<span class="cstat-no" title="statement not covered" >                dragContainerId: '',</span>
<span class="cstat-no" title="statement not covered" >                dragBarClass: '',</span>
<span class="cstat-no" title="statement not covered" >                resizeEdge: 10,</span>
<span class="cstat-no" title="statement not covered" >                dirctDom: true,</span>
<span class="cstat-no" title="statement not covered" >                canDrag: true,</span>
<span class="cstat-no" title="statement not covered" >                canResize: true,</span>
<span class="cstat-no" title="statement not covered" >            };</span>
&nbsp;
<span class="cstat-no" title="statement not covered" >            let isMove = false;</span>
<span class="cstat-no" title="statement not covered" >            binding.value = binding.value || {};</span>
            // 合并默认配置和绑定值
<span class="cstat-no" title="statement not covered" >            let cfg = Object.assign({}, defaultOpts, binding.value);</span>
&nbsp;
            // 从元素属性获取配置（所有属性带drag-前缀）
<span class="cstat-no" title="statement not covered" >            const dragDirectionAttr = el.getAttribute('drag-direction');</span>
<span class="cstat-no" title="statement not covered" >            const dragContainerIdAttr = el.getAttribute('drag-container-id');</span>
<span class="cstat-no" title="statement not covered" >            const dragBarClassAttr = el.getAttribute('drag-bar-class');</span>
<span class="cstat-no" title="statement not covered" >            const resizeEdgeAttr = el.getAttribute('drag-resize-edge');</span>
<span class="cstat-no" title="statement not covered" >            const dirctDomAttr = el.getAttribute('drag-dirct-dom');</span>
<span class="cstat-no" title="statement not covered" >            const canDragAttr = el.getAttribute('drag-can-drag');</span>
<span class="cstat-no" title="statement not covered" >            const canResizeAttr = el.getAttribute('drag-can-resize');</span>
&nbsp;
            // 应用属性配置
<span class="cstat-no" title="statement not covered" >            if (dragDirectionAttr) cfg.dragDirection = dragDirectionAttr;</span>
<span class="cstat-no" title="statement not covered" >            if (dragContainerIdAttr) cfg.dragContainerId = dragContainerIdAttr;</span>
<span class="cstat-no" title="statement not covered" >            if (dragBarClassAttr) cfg.dragBarClass = dragBarClassAttr;</span>
<span class="cstat-no" title="statement not covered" >            if (resizeEdgeAttr) cfg.resizeEdge = parseInt(resizeEdgeAttr, 10);</span>
<span class="cstat-no" title="statement not covered" >            if (dirctDomAttr !== null) cfg.dirctDom = dirctDomAttr === 'true';</span>
<span class="cstat-no" title="statement not covered" >            if (canDragAttr !== null) cfg.canDrag = canDragAttr === 'true';</span>
<span class="cstat-no" title="statement not covered" >            if (canResizeAttr !== null) cfg.canResize = canResizeAttr === 'true';</span>
&nbsp;
            // 存储元素原始transform（用于拖拽后恢复，null表示原本无transform）
<span class="cstat-no" title="statement not covered" >            let originalTransform: string | null = null;</span>
            // 存储最终的尺寸和位置数据
<span class="cstat-no" title="statement not covered" >            let finalData: any = null;</span>
&nbsp;
            // 获取目标元素 resize方向
<span class="cstat-no" title="statement not covered" >            function getDirection(e: MouseEvent) {</span>
<span class="cstat-no" title="statement not covered" >                const elTar = e.currentTarget as HTMLElement;</span>
<span class="cstat-no" title="statement not covered" >                let dir = '';</span>
<span class="cstat-no" title="statement not covered" >                const rect = elTar.getBoundingClientRect();</span>
<span class="cstat-no" title="statement not covered" >                const win = elTar.ownerDocument.defaultView;</span>
<span class="cstat-no" title="statement not covered" >                if (!win) return '';</span>
&nbsp;
<span class="cstat-no" title="statement not covered" >                const offset = {</span>
<span class="cstat-no" title="statement not covered" >                    top: rect.top + win.pageYOffset,</span>
<span class="cstat-no" title="statement not covered" >                    left: rect.left + win.pageXOffset,</span>
<span class="cstat-no" title="statement not covered" >                    right: rect.right + win.pageXOffset,</span>
<span class="cstat-no" title="statement not covered" >                    bottom: rect.bottom + win.pageYOffset</span>
<span class="cstat-no" title="statement not covered" >                };</span>
&nbsp;
<span class="cstat-no" title="statement not covered" >                if (e.pageY &gt; offset.top &amp;&amp; e.pageY &lt; offset.top + cfg.resizeEdge) { dir += 'n'; }</span>
<span class="cstat-no" title="statement not covered" >                else if (e.pageY &lt; offset.bottom &amp;&amp; e.pageY &gt; offset.bottom - cfg.resizeEdge) { dir += 's'; }</span>
&nbsp;
<span class="cstat-no" title="statement not covered" >                if (e.pageX &gt; offset.left &amp;&amp; e.pageX &lt; offset.left + cfg.resizeEdge) dir += 'w';</span>
<span class="cstat-no" title="statement not covered" >                else if (e.pageX &lt; offset.right &amp;&amp; e.pageX &gt; offset.right - cfg.resizeEdge) dir += 'e';</span>
&nbsp;
<span class="cstat-no" title="statement not covered" >                const directions = cfg.dragDirection.split(',').map((d: any) =&gt; d.trim());</span>
<span class="cstat-no" title="statement not covered" >                return directions.includes('all') || directions.includes(dir) ? dir : '';</span>
<span class="cstat-no" title="statement not covered" >            }</span>
&nbsp;
            // 设置约束范围
<span class="cstat-no" title="statement not covered" >            function setConstraint(data: any) {</span>
<span class="cstat-no" title="statement not covered" >                if (cfg.dragContainerId) {</span>
<span class="cstat-no" title="statement not covered" >                    const constraintDom = document.querySelector(`#${cfg.dragContainerId}`);</span>
<span class="cstat-no" title="statement not covered" >                    if (!constraintDom) return;</span>
&nbsp;
<span class="cstat-no" title="statement not covered" >                    const constraintRect = constraintDom.getBoundingClientRect();</span>
<span class="cstat-no" title="statement not covered" >                    if (data.left &lt;= 0) data.left = 0;</span>
<span class="cstat-no" title="statement not covered" >                    if (data.top &lt;= 0) data.top = 0;</span>
<span class="cstat-no" title="statement not covered" >                    if (data.top + data.height + data.borderTop + data.borderBottom &gt;= constraintRect.height) {</span>
<span class="cstat-no" title="statement not covered" >                        data.top = constraintRect.height - data.height - data.borderTop - data.borderBottom;</span>
<span class="cstat-no" title="statement not covered" >                    }</span>
<span class="cstat-no" title="statement not covered" >                    if (data.left + data.width + data.borderLeft + data.borderRight &gt; constraintRect.width) {</span>
<span class="cstat-no" title="statement not covered" >                        data.left = constraintRect.width - data.width - data.borderLeft - data.borderRight;</span>
<span class="cstat-no" title="statement not covered" >                    }</span>
<span class="cstat-no" title="statement not covered" >                }</span>
<span class="cstat-no" title="statement not covered" >            }</span>
&nbsp;
            // 恢复元素原始transform状态
<span class="cstat-no" title="statement not covered" >            function restoreOriginalTransform() {</span>
<span class="cstat-no" title="statement not covered" >                if (originalTransform !== null) {</span>
                    // 原有transform存在：恢复原始值（清除!important标记）
<span class="cstat-no" title="statement not covered" >                    el.style.transform = originalTransform;</span>
                    // 兼容部分浏览器对!important的缓存问题，二次赋值确保生效
<span class="cstat-no" title="statement not covered" >                    if (el.style.transform === 'none !important') {</span>
<span class="cstat-no" title="statement not covered" >                        el.style.transform = originalTransform;</span>
<span class="cstat-no" title="statement not covered" >                    }</span>
<span class="cstat-no" title="statement not covered" >                } else {</span>
                    // 原有transform不存在：彻底删除transform相关样式（兼容浏览器前缀）
<span class="cstat-no" title="statement not covered" >                    el.style.removeProperty('transform');</span>
<span class="cstat-no" title="statement not covered" >                    el.style.removeProperty('-webkit-transform');</span>
<span class="cstat-no" title="statement not covered" >                    el.style.removeProperty('-moz-transform');</span>
<span class="cstat-no" title="statement not covered" >                    el.style.removeProperty('-ms-transform');</span>
<span class="cstat-no" title="statement not covered" >                    el.style.removeProperty('-o-transform');</span>
<span class="cstat-no" title="statement not covered" >                }</span>
<span class="cstat-no" title="statement not covered" >            }</span>
&nbsp;
            // 更新DOM样式
<span class="cstat-no" title="statement not covered" >            function updateDom(data: any) {</span>
<span class="cstat-no" title="statement not covered" >                if (cfg.dirctDom) {</span>
                    // 保存最终数据用于拖拽结束时强制应用
<span class="cstat-no" title="statement not covered" >                    finalData = { ...data };</span>
<span class="cstat-no" title="statement not covered" >                    Object.assign(el.style, {</span>
<span class="cstat-no" title="statement not covered" >                        width: cfg.canResize ? `${data.width}px` : el.style.width,</span>
<span class="cstat-no" title="statement not covered" >                        height: cfg.canResize ? `${data.height}px` : el.style.height,</span>
<span class="cstat-no" title="statement not covered" >                        left: cfg.canDrag ? `${data.left}px` : el.style.left,</span>
<span class="cstat-no" title="statement not covered" >                        top: cfg.canDrag ? `${data.top}px` : el.style.top,</span>
                        // 拖拽期间强制清除transform，确保位置计算准确
<span class="cstat-no" title="statement not covered" >                        transform: 'none !important'</span>
<span class="cstat-no" title="statement not covered" >                    });</span>
<span class="cstat-no" title="statement not covered" >                }</span>
<span class="cstat-no" title="statement not covered" >            }</span>
&nbsp;
            // --------------------------
            // 核心修改1：新增事件派发逻辑
            // 拖拽/缩放结束后，派发尺寸变化事件
            // --------------------------
<span class="cstat-no" title="statement not covered" >            function applyFinalStyles() {</span>
<span class="cstat-no" title="statement not covered" >                if (cfg.dirctDom &amp;&amp; finalData) {</span>
                    // 1. 先强制应用最终样式（原有逻辑）
<span class="cstat-no" title="statement not covered" >                    el.style.width = cfg.canResize ? `${finalData.width}px` : el.style.width;</span>
<span class="cstat-no" title="statement not covered" >                    el.style.height = cfg.canResize ? `${finalData.height}px` : el.style.height;</span>
<span class="cstat-no" title="statement not covered" >                    el.style.left = cfg.canDrag ? `${finalData.left}px` : el.style.left;</span>
<span class="cstat-no" title="statement not covered" >                    el.style.top = cfg.canDrag ? `${finalData.top}px` : el.style.top;</span>
                    // 2. 关键：从元素的 data-node 属性中获取节点ID（组件已存储节点ID在这里）
<span class="cstat-no" title="statement not covered" >                    const dataNodeAttr = el.getAttribute('data-node');</span>
<span class="cstat-no" title="statement not covered" >                    const nodeId = dataNodeAttr ? JSON.parse(dataNodeAttr).id : '';</span>
&nbsp;
                    // 3. 派发自定义事件：携带节点ID和最新尺寸
<span class="cstat-no" title="statement not covered" >                    if (nodeId &amp;&amp; cfg.canResize) { // 只在尺寸变化时派发</span>
<span class="cstat-no" title="statement not covered" >                        el.dispatchEvent(new CustomEvent('drag-size-change', {</span>
<span class="cstat-no" title="statement not covered" >                            bubbles: false, // 不冒泡，避免干扰其他元素</span>
<span class="cstat-no" title="statement not covered" >                            detail: {</span>
<span class="cstat-no" title="statement not covered" >                                nodeId: nodeId,       // 节点唯一ID（用于组件定位存储）</span>
<span class="cstat-no" title="statement not covered" >                                width: finalData.width,  // 最新宽度</span>
<span class="cstat-no" title="statement not covered" >                                height: finalData.height // 最新高度</span>
<span class="cstat-no" title="statement not covered" >                            }</span>
<span class="cstat-no" title="statement not covered" >                        }));</span>
<span class="cstat-no" title="statement not covered" >                    }</span>
<span class="cstat-no" title="statement not covered" >                }</span>
<span class="cstat-no" title="statement not covered" >            }</span>
&nbsp;
            // 鼠标移动/离开（不变）
<span class="cstat-no" title="statement not covered" >            el.onmousemove = function (e: MouseEvent) {</span>
<span class="cstat-no" title="statement not covered" >                if (cfg.dragBarClass &amp;&amp; e.target instanceof Element &amp;&amp; e.target.classList.contains(cfg.dragBarClass) &amp;&amp; cfg.canDrag) {</span>
<span class="cstat-no" title="statement not covered" >                    el.style.cursor = 'move';</span>
<span class="cstat-no" title="statement not covered" >                    return;</span>
<span class="cstat-no" title="statement not covered" >                }</span>
<span class="cstat-no" title="statement not covered" >                const dir = getDirection(e);</span>
<span class="cstat-no" title="statement not covered" >                el.style.cursor = dir ? `${dir}-resize` : '';</span>
<span class="cstat-no" title="statement not covered" >            };</span>
&nbsp;
<span class="cstat-no" title="statement not covered" >            el.onmouseleave = function () {</span>
<span class="cstat-no" title="statement not covered" >                el.style.cursor = '';</span>
<span class="cstat-no" title="statement not covered" >            };</span>
&nbsp;
            // 鼠标按下事件处理
<span class="cstat-no" title="statement not covered" >            el.onmousedown = function (e: MouseEvent) {</span>
<span class="cstat-no" title="statement not covered" >                isMove = false;</span>
<span class="cstat-no" title="statement not covered" >                finalData = null; // 重置最终数据</span>
&nbsp;
                // 检查是否点击了拖拽
<span class="cstat-no" title="statement not covered" >                if (cfg.dragBarClass &amp;&amp; e.target instanceof Element &amp;&amp; e.target.classList.contains(cfg.dragBarClass)) {</span>
<span class="cstat-no" title="statement not covered" >                    isMove = true;</span>
<span class="cstat-no" title="statement not covered" >                    document.body.style.cursor = 'move';</span>
<span class="cstat-no" title="statement not covered" >                }</span>
&nbsp;
<span class="cstat-no" title="statement not covered" >                const style = window.getComputedStyle(el);</span>
<span class="cstat-no" title="statement not covered" >                const getStyleNumValue = (key: string) =&gt; parseInt(style.getPropertyValue(key), 10) || 0;</span>
&nbsp;
<span class="cstat-no" title="statement not covered" >                const rect = el.getBoundingClientRect();</span>
<span class="cstat-no" title="statement not covered" >                const data = {</span>
<span class="cstat-no" title="statement not covered" >                    width: getStyleNumValue("width"),</span>
<span class="cstat-no" title="statement not covered" >                    height: getStyleNumValue("height"),</span>
<span class="cstat-no" title="statement not covered" >                    left: getStyleNumValue("left"),</span>
<span class="cstat-no" title="statement not covered" >                    top: getStyleNumValue("top"),</span>
<span class="cstat-no" title="statement not covered" >                    borderLeft: getStyleNumValue("border-left-width"),</span>
<span class="cstat-no" title="statement not covered" >                    borderTop: getStyleNumValue("border-top-width"),</span>
<span class="cstat-no" title="statement not covered" >                    borderRight: getStyleNumValue("border-right-width"),</span>
<span class="cstat-no" title="statement not covered" >                    borderBottom: getStyleNumValue("border-bottom-width"),</span>
<span class="cstat-no" title="statement not covered" >                    deltX: e.pageX - rect.left,</span>
<span class="cstat-no" title="statement not covered" >                    deltY: e.pageY - rect.top,</span>
<span class="cstat-no" title="statement not covered" >                    startX: rect.left,</span>
<span class="cstat-no" title="statement not covered" >                    startY: rect.top</span>
<span class="cstat-no" title="statement not covered" >                };</span>
&nbsp;
<span class="cstat-no" title="statement not covered" >                const dir = getDirection(e);</span>
<span class="cstat-no" title="statement not covered" >                if (!dir &amp;&amp; !isMove) return;</span>
&nbsp;
                // 记录原始transform并临时清除
<span class="cstat-no" title="statement not covered" >                originalTransform = el.style.transform || null;</span>
<span class="cstat-no" title="statement not covered" >                el.style.transform = 'none !important';</span>
&nbsp;
                // 创建遮罩防止事件穿透
<span class="cstat-no" title="statement not covered" >                const mask = document.createElement("div");</span>
<span class="cstat-no" title="statement not covered" >                mask.style.cssText = "position:absolute;top:0;bottom:0;left:0;right:0;z-index:9999;";</span>
<span class="cstat-no" title="statement not covered" >                document.body.appendChild(mask);</span>
&nbsp;
                // 鼠标移动处理函数
<span class="cstat-no" title="statement not covered" >                const handleMouseMove = (edom: MouseEvent) =&gt; {</span>
<span class="cstat-no" title="statement not covered" >                    const resizeActions = {</span>
<span class="cstat-no" title="statement not covered" >                        e() {</span>
<span class="cstat-no" title="statement not covered" >                            data.width = edom.pageX - data.startX + data.borderLeft + data.borderRight;</span>
<span class="cstat-no" title="statement not covered" >                        },</span>
<span class="cstat-no" title="statement not covered" >                        s() { data.height = edom.pageY - data.startY + data.borderBottom + data.borderTop; },</span>
<span class="cstat-no" title="statement not covered" >                        n() {</span>
<span class="cstat-no" title="statement not covered" >                            const deltheight = data.startY + data.borderBottom + data.borderTop - edom.pageY;</span>
<span class="cstat-no" title="statement not covered" >                            data.height += deltheight;</span>
<span class="cstat-no" title="statement not covered" >                            data.top -= deltheight;</span>
<span class="cstat-no" title="statement not covered" >                            data.startY -= deltheight;</span>
<span class="cstat-no" title="statement not covered" >                        },</span>
<span class="cstat-no" title="statement not covered" >                        w() {</span>
<span class="cstat-no" title="statement not covered" >                            const deltwidth = data.startX + data.borderLeft + data.borderRight - edom.pageX;</span>
<span class="cstat-no" title="statement not covered" >                            data.width += deltwidth;</span>
<span class="cstat-no" title="statement not covered" >                            data.left -= deltwidth;</span>
<span class="cstat-no" title="statement not covered" >                            data.startX -= deltwidth;</span>
<span class="cstat-no" title="statement not covered" >                        }</span>
<span class="cstat-no" title="statement not covered" >                    };</span>
                    // 执行对应方向的调整
<span class="cstat-no" title="statement not covered" >                    if (dir &amp;&amp; cfg.canResize) {</span>
<span class="cstat-no" title="statement not covered" >                        Object.keys(resizeActions).forEach(key =&gt; {</span>
<span class="cstat-no" title="statement not covered" >                            if (dir.includes(key)) {</span>
<span class="cstat-no" title="statement not covered" >                                resizeActions[key as keyof typeof resizeActions]();</span>
<span class="cstat-no" title="statement not covered" >                            }</span>
<span class="cstat-no" title="statement not covered" >                        });</span>
<span class="cstat-no" title="statement not covered" >                    }</span>
&nbsp;
                    // 拖拽处理
<span class="cstat-no" title="statement not covered" >                    if (isMove &amp;&amp; cfg.canDrag) {</span>
<span class="cstat-no" title="statement not covered" >                        const deltX = edom.pageX - data.startX - data.deltX;</span>
<span class="cstat-no" title="statement not covered" >                        const deltY = edom.pageY - data.startY - data.deltY;</span>
<span class="cstat-no" title="statement not covered" >                        const newLeft = getStyleNumValue("left") + deltX;</span>
<span class="cstat-no" title="statement not covered" >                        const newTop = getStyleNumValue("top") + deltY;</span>
&nbsp;
<span class="cstat-no" title="statement not covered" >                        data.left = newLeft;</span>
<span class="cstat-no" title="statement not covered" >                        data.top = newTop;</span>
<span class="cstat-no" title="statement not covered" >                        data.startX += deltX;</span>
<span class="cstat-no" title="statement not covered" >                        data.startY += deltY;</span>
<span class="cstat-no" title="statement not covered" >                        setConstraint(data);</span>
<span class="cstat-no" title="statement not covered" >                    }</span>
&nbsp;
                    // 更新DOM
<span class="cstat-no" title="statement not covered" >                    updateDom(data);</span>
&nbsp;
                    // 触发自定义事件
<span class="cstat-no" title="statement not covered" >                    el.dispatchEvent(new CustomEvent('bindUpdate', { detail: { ...data } }));</span>
<span class="cstat-no" title="statement not covered" >                };</span>
&nbsp;
                // 鼠标释放处理函数
<span class="cstat-no" title="statement not covered" >                const handleMouseUp = () =&gt; {</span>
<span class="cstat-no" title="statement not covered" >                    document.body.style.cursor = '';</span>
<span class="cstat-no" title="statement not covered" >                    document.removeEventListener('mousemove', handleMouseMove);</span>
<span class="cstat-no" title="statement not covered" >                    document.removeEventListener('mouseup', handleMouseUp);</span>
<span class="cstat-no" title="statement not covered" >                    isMove = false;</span>
&nbsp;
<span class="cstat-no" title="statement not covered" >                    applyFinalStyles(); // 这里会触发尺寸事件派发</span>
&nbsp;
                    // 恢复原始transform
<span class="cstat-no" title="statement not covered" >                    restoreOriginalTransform();</span>
<span class="cstat-no" title="statement not covered" >                    originalTransform = null;</span>
&nbsp;
                    // 移除遮罩
<span class="cstat-no" title="statement not covered" >                    if (mask.parentNode) document.body.removeChild(mask);</span>
<span class="cstat-no" title="statement not covered" >                };</span>
&nbsp;
                // 绑定全局事件
<span class="cstat-no" title="statement not covered" >                document.addEventListener('mousemove', handleMouseMove);</span>
<span class="cstat-no" title="statement not covered" >                document.addEventListener('mouseup', handleMouseUp);</span>
&nbsp;
                // 设置鼠标样式
<span class="cstat-no" title="statement not covered" >                if (dir) { </span>
<span class="cstat-no" title="statement not covered" >                    document.body.style.cursor = `${dir}-resize`;</span>
<span class="cstat-no" title="statement not covered" >                }</span>
                // 阻止默认行为防止文本选中
<span class="cstat-no" title="statement not covered" >                e.preventDefault();</span>
<span class="cstat-no" title="statement not covered" >            };</span>
<span class="cstat-no" title="statement not covered" >        },</span>
        // 指令解绑时清理事件和样式
<span class="cstat-no" title="statement not covered" >        unmounted(el: HTMLElement) {</span>
<span class="cstat-no" title="statement not covered" >            el.onmousemove = null;</span>
<span class="cstat-no" title="statement not covered" >            el.onmouseleave = null;</span>
<span class="cstat-no" title="statement not covered" >            el.onmousedown = null;</span>
<span class="cstat-no" title="statement not covered" >            el.style.removeProperty('transform');</span>
<span class="cstat-no" title="statement not covered" >        }</span>
<span class="cstat-no" title="statement not covered" >    });</span>
<span class="cstat-no" title="statement not covered" >};</span></pre></td></tr></table></pre>

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